Most people who are looking for debt negotiation services are anxious to get all of their debts taken care of as fast as possible. The reality is that any good provider of debt negotiation services will be smart enough to deal with one debt at a time. The reason for this is because by taking steps in the process rather than giant leaps, you are building more ability to negotiate. Here is what I mean.
Let's say that you have 5 outstanding debts to 5 different creditors. Each will settle with you based on your history with them and credit history in general. Now, if you were to work with them all at once, you will be settling based on your current credit rating which reflects all of the balances. Now let's say that you work with the biggest one first and reach a positive settlement. When the time comes to move on to the second one, your credit report will no longer reflect the first.
The process will repeat itself until you have used the debt negotiation services to settle all of your debts; each resolution getting better than the last because you have improved your stance with each individual step. If you are looking for debt negotiation services, go with someone who can provide you with the best long term solutions instead of the quickest fix.